The big questions for the new year in gaming

While 2007 was undeniably exciting, 2008 will be the big one. Wii is in popularity overdrive, fending off questions concerning its longevity and scope; Xbox 360 is clinging on with generous developer support in the US; PS3 is clambering out of its ruinously expensive infanthood. The hardware cycle is stabilising, shifting the battlegrounds to software and inter-publisher rivalries. So what are the big questions this year?